Weather Alert in Pennsylvania
Wind Advisory issued February 6 at 2:03AM EST until February 7 at 10:00PM EST by NWS State College PA
AREAS AFFECTED: Mifflin; Juniata; Franklin; Union; Snyder; Montour; Northumberland; Columbia; Perry; Dauphin; Schuylkill; Lebanon; Cumberland; Adams; York; Lancaster
DESCRIPTION: * WHAT...For the Cold Weather Advisory, very cold wind chills as low as 20 below expected. For the Wind Advisory, northwest winds 15 to 25 mph with gusts up to 55 mph expected. * WHERE...A portion of south-central Pennsylvania. * WHEN...For the Cold Weather Advisory, from 4 AM Saturday to 10 AM EST Sunday. For the Wind Advisory, from 4 AM to 10 PM EST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. The dangerously cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes.
INSTRUCTION: Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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